package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Transactional
    public void dishWithFlavor(DishDTO dishDTO) {

        //想菜品表插入一条数据
        Dish dish = new Dish();

        BeanUtils.copyProperties(dishDTO, dish);

        dishMapper.insert(dish);

        Long dishId = dish.getId();


        List<DishFlavor> flavors = dishDTO.getFlavors();

        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
            //向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public PageResult PageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());

        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());
    }

    @Transactional
    public void deleteBatch(List<Long> ids) {
        //菜品是否存是在启售中的商品
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);

            if(dish.getStatus() == StatusConstant.ENABLE){
                throw  new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

        //菜品是否被套餐关联
        List<Long> dishIdsBySeteamlId = setmealDishMapper.getDishIdsBySeteamlId(ids);
        if (dishIdsBySeteamlId.size() > 0 ) {
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        //删除菜品表中的菜品数据
//        for (Long id : ids) {
//            dishMapper.deleteById(id);
//
//            //删除菜品关联的口味数据
//            dishFlavorMapper.deleteByDishId(id);
//        }

        //根据菜品id集合批量删除菜品和关联的口味数据
        dishMapper.deleteByIds(ids);

        dishFlavorMapper.deleteByDishIds(ids);
    }

    /**
     * 根据id查询对应的菜品和口味
     * @param id
     * @return
     */
    @Transactional
    public DishVO getByIdWithFlavor(Long id) {

        Dish dish = dishMapper.getById(id);

        List<DishFlavor> list = dishFlavorMapper.getDishId(id);

        DishVO dishVO = new DishVO();

        BeanUtils.copyProperties(dish,dishVO);

        dishVO.setFlavors(list);

        return dishVO;

    }

    /**
     * 修改菜品和关联的口味
     * @param dishDTO
     */
    @Transactional
    public void updateDishWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();

        BeanUtils.copyProperties(dishDTO,dish);
        //修改基本信息
        dishMapper.update(dish);

        //修改菜品信息，采用删除再添加的方式

        //删除原有菜品
        dishFlavorMapper.deleteByDishId(dishDTO.getId());

        //获取修改的菜品
        List<DishFlavor> flavors = dishDTO.getFlavors();

        //插入菜品
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dish.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder()
                .status(status)
                .id(id)
                .build();

        dishMapper.update(dish);
    }

    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

}
